21272940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{9091}}^1$

素因数の和:9119

約数の個数: 72

約数和(自身を含む): 69499248

約数和(自身を除く): 48226308

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 9091, 18182, 27273, 36364, 45455, 54546, 81819, 90910, 109092, 118183, 136365, 163638, 181820, 236366, 272730, 327276, 354549, 409095, 472732, 545460, 590915, 709098, 818190, 1063647, 1181830, 1418196, 1636380, 1772745, 2127294, 2363660, 3545490, 4254588, 5318235, 7090980, 10636470, 21272940]

約数ペア:

[(1, 21272940), (2, 10636470), (3, 7090980), (4, 5318235), (5, 4254588), (6, 3545490), (9, 2363660), (10, 2127294), (12, 1772745), (13, 1636380), (15, 1418196), (18, 1181830), (20, 1063647), (26, 818190), (30, 709098), (36, 590915), (39, 545460), (45, 472732), (52, 409095), (60, 354549), (65, 327276), (78, 272730), (90, 236366), (117, 181820), (130, 163638), (156, 136365), (180, 118183), (195, 109092), (234, 90910), (260, 81819), (390, 54546), (468, 45455), (585, 36364), (780, 27273), (1170, 18182), (2340, 9091)]